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Merged revisions 76000,76016 via svnmerge from

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........
  r76000 | gregory.p.smith | 2009-10-31 14:26:08 -0700 (Sat, 31 Oct 2009) | 7 lines

  Fixes issue7208 - getpass would still allow the password to be echoed on
  Solaris due to not flushing the input buffer.

  This change also incorporates some additional getpass implementation
  suggestions for security based on an analysis of getpass.c linked to from the
  issue.
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  r76016 | gregory.p.smith | 2009-11-01 10:33:55 -0800 (Sun, 01 Nov 2009) | 2 lines

  news entry for r76000
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This commit is contained in:
Gregory P. Smith 2009-11-01 18:42:17 +00:00
parent f3b800269c
commit 5046788ca5
2 changed files with 14 additions and 3 deletions
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11
Lib/getpass.py
View file

@ -62,12 +62,16 @@ def unix_getpass(prompt='Password: ', stream=None):
try:
old = termios.tcgetattr(fd) # a copy to save
new = old[:]
new[3] &= ~termios.ECHO # 3 == 'lflags'
new[3] &= ~(termios.ECHO|termios.ISIG) # 3 == 'lflags'
tcsetattr_flags = termios.TCSAFLUSH
if hasattr(termios, 'TCSASOFT'):
tcsetattr_flags |= termios.TCSASOFT
try:
termios.tcsetattr(fd, termios.TCSADRAIN, new)
termios.tcsetattr(fd, tcsetattr_flags, new)
passwd = _raw_input(prompt, stream, input=input)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old)
termios.tcsetattr(fd, tcsetattr_flags, old)
stream.flush() # issue7208
except termios.error as e:
if passwd is not None:
# _raw_input succeeded. The final tcsetattr failed. Reraise
@ -124,6 +128,7 @@ def _raw_input(prompt="", stream=None, input=None):
if prompt:
stream.write(prompt)
stream.flush()
# NOTE: The Python C API calls flockfile() (and unlock) during readline.
line = input.readline()
if not line:
raise EOFError